Chemistry: Atoms, Molecules, and Chemical Formulas Worksheet

Chemistry: Atoms, Molecules, and Chemical Formulas Worksheet

7th Grade

25 Qs

quiz-placeholder

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Chemistry: Atoms, Molecules, and Chemical Formulas Worksheet

Chemistry: Atoms, Molecules, and Chemical Formulas Worksheet

Assessment

Quiz

Science

7th Grade

Practice Problem

Medium

NGSS
MS-PS1-1, MS-PS1-2

Standards-aligned

Created by

Shamir Johnson

Used 2+ times

FREE Resource

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the smallest unit of an element that maintains its chemical properties?

A molecule

An atom

A compound

An electron

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes a molecule?

A single atom of any element

Two or more atoms bonded together

A proton and neutron together

The nucleus of an atom

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The chemical formula H2O indicates that a water molecule contains:

One hydrogen atom and two oxygen atoms

Two hydrogen atoms and one oxygen atom

Two oxygen atoms and one hydrogen atom

One hydrogen atom and one oxygen atom

Tags

NGSS.MS-PS1-1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the subscript number in a chemical formula represent?

The atomic number of the element

The atomic mass of the element

The number of atoms of that element

The charge of the element

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of an element?

Water (H2O)

Table salt (NaCl)

Gold (Au)

Carbon dioxide (CO2)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the chemical formula CO2, what does the "2" indicate?

a. Two carbon atoms

b. Two molecules of carbon dioxide

c. Two oxygen atoms

d. The charge on the oxygen

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you identify the number of different elements in a chemical formula?

Count the total number of atoms

Count the different capital letters

Tags

NGSS.MS-PS1-1

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